Buzz count: How to work out how much caffeine you're drinking

There's a hidden caffeine buzz in flavoured milks.

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Instant coffee

Many of us rely on caffeine to pull us into work wide-eyed and eager, but do you know how much you're really getting?

The Australian Beverages Council says that it's possible to consume up to 400mg of caffeine a day without suffering any ill effects - but for those who are pregnant or prone to anxiety, the daily amount should be roughly half this at 210mg.

Amount of caffeine: 60-80mg in a 250ml cup.

Equivalent in cups of instant coffee: Exactly one.

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Cafe-made Capuccino

Amount of caffeine: 113 - 282mg in a 250ml cup.

Equivalent in cups of instant coffee: Roughly two to three cups, depending on size and strength of espresso used.

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Black tea (bagged)

Amount of caffeine: 25 - 110mg in a 250ml cup.

Equivalent in cups of instant coffee: Between 0.5 and 1 cups.

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Green tea (bagged)

Amount of caffeine: 30 - 50mg in a 250ml cup.

Equivalent in cups of instant coffee: 0.7 cups of instant coffee.

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Matcha green tea

Amount of caffeine: 70mg in a 220ml cup.

Equivalent in cups of instant coffee: One cup.

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Coca-Cola

Amount of caffeine: 35mg in a 375ml can.

Equivalent in cups of instant coffee: Half a cup.

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Farmer's Union Iced Coffee

Amount of caffeine: 115mg in a 600ml serving.

Equivalent in cups of instant coffee: Almost two cups.

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Diet Coca-Cola

Amount of caffeine: 45mg in a 375ml can.

Equivalent in cups of instant coffee: Approximately one.

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Barista Bros Double Strength Iced Coffee

Amount of caffeine: 219mg per 500ml bottle.

Equivalent in cups of instant coffee: Almost four cups of instant coffee.